APA (7e ed.) Bronvermelding

Não informado. (1956). Social Work. National Association of Social Workers.

Chicago (17e ed.) Bronvermelding

Não informado. Social Work. Silver Spring, Md: National Association of Social Workers, 1956.

MLA (8e ed.) Bronvermelding

Não informado. Social Work. National Association of Social Workers, 1956.

Let op: Deze citaties zijn niet altijd 100% accuraat.